Belgian police had launched a manhunt for Laachraoui after Tuesday’s attacks, saying he had fled the scene of the bombings at Zaventem airport, where at least 11 people died. The second attack, at Maalbeek metro station in central Brussels, killed at least 20 people. Hundreds were injured in the attacks, for which ISIL claimed responsibility.

Soldiers controlled access to Brussels airport on Wednesday, one day after two terror attacks hit.

Laachraoui was already wanted by police after he was linked to the Paris attacks in November. He is believed to be one of three men caught on CCTV pushing luggage carts through the terminal minutes before the explosions.